Production efficiency results of the 773 pig farmers in the five provinces of Hunan, Zhejiang, Guangdong, Guizhou, and Shanxi.
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资源简介：
Production efficiency results of the 773 pig farmers in the five provinces of Hunan, Zhejiang, Guangdong, Guizhou, and Shanxi.
创建时间：
2017-12-28
